Possessed by a "Grandma Voice," Cyborg initially endears the other Titans, but then he annoys them, acting as if he was their actual grandma.
Plot
The episode begins with the Titans battling Mother Mae-Eye in Jump City. She attacks them all with her granny-like attacks until Cyborg claims that his own grandma was even better. Cyborg then interprets his grandma by altering his voice to sound like her. He easily fires off sonic blasts towards Mother Mae-Eye, which scares her off into the distance. Starfire tells Cyborg his voice is funny and Cyborg smiles wickedly.
Back at Titans Tower, the other Titans all get tired of Cyborg's "Grandma Voice" by the time they reach the main lobby. Cyborg does not catch onto this and continues being grandma. He claims that he got stuck doing the voice and cannot stop until Raven punches him which temporarily puts an end to it.
The next morning, the Titans see Cyborg dressed up like his own grandmother with a wig, cooking breakfast. Robin, in a state of shock, tells Cyborg to knock it off already but in terms of a grandmother that would lead to more sassing which the only way to get rid of it is by knocking some sense. Avoiding that, the Titans try to accept Cyborg as a grandma which they eventually get used with her after doing completing house chores while playing music and dancing. Grandma Cyborg made for them sweaters as a reward for helping her and Robin admits that he likes her too (for now). A while later, Beast Boy plays video games, but is interrupted by Grandma, claiming that he has homework to do, despite the fact that Beast Boy has none. Starfire and Raven were about to leave the living room but were stopped by Grandma due to Starfire's attire was showing some skin but Robin has nothing against it. From that sass he gets knocked with some sense out of the Tower, leading Starfire to get worried that knock was too rough for Robin. Raven amused, tries to avoid from laughing. She was all free from sass according to Grandma's Sass Detector.
After Grandma Cyborg left, the Titans gathered up together devising a plan to return Cyborg back to his normal self since they all were annoyed by "her" and even though they knew it is completely rude to hit old people (unless they are evil). For that, they manage to get captured by Mother Mae-Eye's trap in a pie making machine on purpose only for Grandma Cyborg to rescue them. During the battle against Mother Mae-Eye, Grandma Cyborg gets some sense knocked into him by her magical spoon, turning him back to normal as the Grandma Voice Ghost briefly waves at Cyborg telling him to take care of himself and fades away. Mother Mae-Eye tried to escape but she gets blasted out by Cyborg's Sonic Cannon and when he checks the Titans, Beast Boy was already full of cherry pie he ate.
Back at the Tower, Cyborg weeps for he misses his own grandmother voice but Beast Boy claims that she will be always with them in fond memory as he started to play again the same music they used for domestic tasks and all. The Titans started to dance in the end, even Grandma Voice Ghost as well near her grave.
Cyborg's Grandma Voice apparently "dies" as there was a tombstone outside the Titans Tower for it.
Raven mentions that her grandmother was a succubus.
References
The entire episode is a reference to the original Teen Titans episode, "Mother Mae-Eye", which contains a very similar plot, and Cyborg taking Mother Mae-Eye's place as the Titans' mother.
Furthermore, Mother Mae-Eye herself appears in this episode, adding yet another reference.
It's also the second time where Cyborg is the one who causes him to fall.
Mother Mae-Eye's pie making machine which first appeared in "Pie Bros" makes a return in this episode.
Errors
When Cyborg (in his Grandma voice) first appears, his dress is light purple. However, when he comments on Raven and Starfire's clothing it turns pink. It later becomes purple again when he fights with Mother Mae-Eye again
Gallery
The image gallery for Grandma Voice may be viewed here.